Orthopedic sole



April 5 1932- M. GLUC'IAUF v 1,852,879

' ORTHOPEDIC SOLE Y Filed Jan. '7, 1929 Pateniea Apr. v5,- V`1932 f n fum511.5113:A STATES;

= l 1,852gs7a MAX GLCKAUF, or BERLIN-CHARLOTTENBURG, GERMANX on'rnornnrcsoLE i Y Application mea January 7, 1929, serial No.

My invention relates to soles and more particularly to soles having anouter sole, lan inner sole, a resilient'intermediate sole, and a metalinsertion, and it is an object of my invention to 'improve a sole ofthis type.

To ythis end, I provide any elevation on the inner sole and a boss onthe insertion to fit the elevation,'and extend the intermediate solebeyond the elevation.

In ythis manner I provide an orthopedicV sole which is adapted forquantity production and may be manufactured at normal cost whereasheretofore they could only be made to order and so were ratherexpensive. Shoes equipped with my soles can bemade on a quantityproduction scale for ladies, gentlemen and (children, and will not onlymake walking pleasant but alsowill counteract depression of themetatarsal bones which is a particularadvantage.

The insertion may be made of metal or lany other resilient material butis preferably made 0f meta-l and is springyso that itymay yield whenthesole is bending. This insertion is combined with thefintermediate solewhich may be of cellular4 or sponge rubber or any other resilientmaterial and cooperates in the moulding of the sole on the last so portsit, as it were, on a bed. My sole thus compares favourablyI with soles`of similar type which kare comparatively rigid and may hurt the foot. f

The invention is clearlyfillustrated in the accompanying drawings, inwhich Fig.` 1 is a plan'view of an improved sole constructed inaccordance with this invention and having a single intermediate sole,

Fig. 2 is a longitudinal sectional view taken on line 2-2 of Fig. l, Y

Fig. 3 is a plan view of a modied insertion, and

Fig. 4 is a cross sectional view on the line 4 4 of Fig. l. v i

In all figures, l isv theouter, 2 is the inner sole which is providedwith a rib at its edge so as to form a recess 3V for thefreception ofthe intermediate sole4 or 4, 12, 12V are registering perforations yinthe inner and intermediate soles with the object of increasing that thesole fits the foot exactly and supaaonraanay in Germany4 January 1s,1,928.r`

the resiliency of thesolev and to impart to it a certainpermeability, 5,5 and ll are elevations formed on the inner soleby moulding it on kthelast, 6 is the heelend of the sole,

8 is an insertion extending from the heel 55` toward the instep, and 9is a convex raised portion on the inner end of the insertiony which fitsthe elevation ll. In this connection attention is directed to the factthat the convex raised portionV tapers rearwardly as at 9V and alsoextends lengthwiseof the sole toward the heel.

Inthe sole illustrated in Fig. 2 the intermediate `sole 4 extends fromthe toe tothe vation 11 forms in the region of the meta- 75D tarsalbones and is permanently but resili-V ently supported 'by the convexraised por-r tion 9.

Referring now tol Fig., 3 an insertion 8 with a `convex raisedportion 9"is shown 80 which is made as a narrow strip the widest ypart of which isthe base of the convexraised portion.

I claim l. A sole comprising the combination with an outer sole, aninner sole and a metal support interposed between said inner sole andouter sole and having a convex raised portion under and extendingto theheight of the metatarsal bones, said raised portion also t extendinglengthwise of the sole towardsthe heel and tapering rearwardly, of aperforated elastic intermediate `sole of cellulary rubber on said metalsupport extending over the entire length of the sole, the innersolehaving t perforations registering Lwith the perforations of the elasticintermediate sole, as and for the purposes set forth.

2. A sole comprising the combination with an'outer sole, an inner soleand a metal sup- 100 f v port interposed between said inner sole andouter sole and having a convex raised portion under and extending to theheight of the metatarsal bones, said raised portion also extendinglengthwise of the sole towards the heel and tapering rearwardly, of aperforated elastic intermediate sole of cellular rubber un suid=meta1supporte/:ttendingi over the entire'length of the sole and coveringlthemetal support and the portion of the outer sole not covered'by .themetalsupportfthe a inner sole having perforations registering with theperforations of the elastic intermediate sole, as and for the purposesset forth.

In testimony whereof `I A"have-signed'my name to this specification.

MAX vGLCKA'U'F.

